Department of Horticultural Science, Faculty of Agriculture, Urmia University, Urmia, Iran.
Department of Soil Science, Faculty of Agriculture, Urmia University, Urmia, Iran.
Sci Rep. 2019 Nov 5;9(1):16025. doi: 10.1038/s41598-019-52547-1.
The effect of foliar application of polyamines on roses (Rosa hybrida cv. 'Herbert Stevens') was investigated in a factorial experiment based on a completely randomized design with three replications in a greenhouse. Two factors were applied including polyamine type (putrescine, spermidine, and spermine) and polyamine concentration (0, 1, 2 and 4 mM). The recorded traits included root fresh and dry weight, root length, number of flowers, flower longevity, chlorophyll content, carotenoids, antioxidant enzymes activity (catalase, ascorbate peroxidase and guaiacol peroxidase) and some macronutrients such as nitrogen, phosphorus and potassium. The results showed that among polyamines, putrescine had the greatest effect on root dry weight; spermidine showed the greatest effect on root length, chlorophyll content, plant phosphorus and spermine affected root fresh weight and flower longevity most strongly. Polyamine concentration of 1 mM had the strongest effect on flower longevity, carotenoids, nitrogen and phosphorus content. The highest potassium rate was observed in treatments with the concentration of 4 mM. Polyamine treatments had no significant effect on the number of flowers per plant and antioxidant enzymes.
叶面喷施多胺对杂交玫瑰（Rosa hybrida cv. 'Herbert Stevens'）的影响在温室中采用完全随机设计的析因试验进行了研究，设 3 次重复。两个因素分别为多胺类型（腐胺、亚精胺和精胺）和多胺浓度（0、1、2 和 4 mM）。记录的性状包括根鲜重和干重、根长、花数、花寿命、叶绿素含量、类胡萝卜素、抗氧化酶活性（过氧化氢酶、抗坏血酸过氧化物酶和愈创木酚过氧化物酶）以及一些大量营养元素，如氮、磷和钾。结果表明，在多胺中，腐胺对根干重的影响最大；亚精胺对根长、叶绿素含量、植物磷的影响最大，而精胺对根鲜重和花寿命的影响最大。1 mM 的多胺浓度对花寿命、类胡萝卜素、氮和磷含量的影响最强。在 4 mM 浓度处理下观察到最高的钾含量。多胺处理对每株花数和抗氧化酶没有显著影响。
